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Appendix
4. Precedence of Calculations
166
When solving a mathematical expression, this calculator inter-
nally looks for the following figures and methods (sorted in the
order of evaluation):
1) Fractions (1/4, a/b, , etc.)
2) Single calculation functions where the numerical value occurs
before the function (X
3) Exponential functions (a
4) Multiplications between a value and a stored variable/con-
×
stant, with "
" abbreviated (2π, 2A, etc.)
5) Single calculation functions where the numerical value occurs
after the function (sin, cos, tan, sin
e
x
,
, abs, int, ipart, fpart, (
6) Multiplications between a number and a function in #5
(3cos20, etc. "cos20" is evaluated first)
7) Permutations and combinations (nPr, nCr)
×
÷
8)
,
+
–
9)
,
10) and
11) or, xor, xnor
12) Equalities and inequalities (<, ≤, >, ≥, ≠, =, →deg, →dms, etc.)
Example
The key operation and calculation precedence
5 + 2 | s 30 + 25 | 5 a 3 E
2nd
3rd
• If parentheses are used, parenthesized calculations have
precedence over any other calculations.
-
2
, X
1
, !, " ° ", "
r
a
b
,
, etc)
-
1
, cos
–
), not, etc.)
1st
6th
", and "
g
")
-
-
1
, tan
1
, log, 10
4th
5th
x
, ln,
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